This is not understandable. If we google for OpenBCI we find OpenBCI advertising on google: “High-quality, low-cost, modular EEG hardware with a global open source community. SDKs & Drivers. Learning Materials. Open-source neuroscience. Affordable EEG, ECG, EMG.” But OpenBCI makes a high profit from Greentek EEG caps. We feel cheated. If we follow the link …